Safety seat for window cleaners



SAFETY SEAT FOR WINDOW CLEANERS Filed Feb. 15. 1922 JI E17 I Patented Mar. 18, 1924.

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CABLALLEB, or DETROIT, MICHIGAN.

SAFETY SEAT FOR WINDOW CLEANERS.

Application filed February 15, 1922. Serial No. 536,625.

I '0 all whom it may concern:

Be it known that I, CARL ALLER, a citizen of the United States, residing at De,- troit, in the county of Wayne and State of Michigan, have invented a new and useful Safety Seat for Window Cleaners, of which the following is a specification.

This invention relates to devices for saf guarding persons engaged in cleaning the outside of windows.

It is the object of the invention to provide a back-rest for a person seated upon the sill of a window and Working upon the exterior of the sashes.

More specifically it is the object of the invention to provide a back-rest which will be held in place jointly by the weight of the window cleaner applied to a sillengaging portion of the device and by hook members engaging the window frame.

A feature of the construction is the derivation of a locking function from said sillengaging portion of the device, by abutting said portion against opposite edges of the window stool.

A preferred embodiment of the invention is hereinafter described, and is illustrated in the accompanying drawing, wherein,

Fig. 1 is a view in interior elevation of a window equipped with the invention.

Fig. 2 is a plan View of the device, showing the frame of the engaged window in cross-section.

Fig. 3 is a vertical section on line 33 of Fig. 1.

In these views, the reference character 1 designates the upright of a Window frame, 2 the sill of said frame, and 3 the stool portion of the sill. The safety attachment for window cleaning purposes is comprised of a rod or heavy wire bent to form a pair of similar upstanding loops 4 consisting of a back-rest, a horizontally looped sill engaging. portion 5, connecting the loops a pair of arm portions 6, respectively projecting from the loops 4, in substantially the same direction as the sill engaging loop 5, but at an elevation above the latter, and in a divergent relation to each other, and hooks 7 at the free ends of said arms (which are also the end portions of said rod or wire), for engagement with the window stool 3, as is best seen in Fig. 3. The closed end of the loop 5 is return-bent to form hooks 5 for engagement with the inner edge of the stool 3, and the side portions of said loop are ofiset to form shoulders 5 for enga ement with the outer edgeof said stool. ince the arms 6 extend at an elevation above the window sill, it is nececssary to bend the free end portions of said arms sharply downward, as indicated at 6 to adapt the hooks 7 to properly engage the window steel 3. Just above said portions 6 there is welded, or otherwise rigidly secured to each arm 6 a rectangularly bent hook member 8, said members projecting laterally in opposite directions from the engaged arms to respectively bear against the interior faces, and to engage the outer edges of the uprights 1. It is preferred to weld together or otherwise rigidly connect the upper portions of the loops 4- as is indicated at 9.

In the use of the describedinvention, attachment of the device to the frame of a window is established by moving said device outwardly in the window opening to engage the hooks 5 and 7 with the inner edge of the stool member 3, and. the hooks 8 with the uprights 1. As the device assumes its position of use the shoulders 5 of loop5 pass into an abutting relation with the stool 3, and thus locks the device against inward shifting. A person seated upon the sill for the purpose of cleaning or otherwiseworking upon the exterior of the sashes or frame will now be safeguarded against falling out by the back-rest at, and furthermore such a person can steady himself by gripping either of the arms 6. The hooks 5, 7 and- 8 strongly resist any outward shifting of the device, and are supplemented in the exercise of this function by the weight of the window cleaner upon the sill engaging loops 5. The portions 6, in addition to forming arm-rests or hand-grips, furthermore function to brace the back 4: and reinforce the same against bending. In detaching the device from a window frame the loop 5 is first sprung up slightly so as to clear the stool member 3, and the device may then be shifted bodily inward.

The described device not only greatly reduces the danger involved in working upon window exteriors, but considerably expedites such work, since both hands of the workman may be free for use.

What I claim is:

1. A safety device for the purpose described, comprising a back-rest, a pair of arms extending from said back-rest, and

projections upon said arms for engaging the sill and. for engaging the uprlghts of a Window frame.

2. A safety device for the purpose described, formed of a single length of Wire bent to form a pair of adjacent upstanding loops constituting a back-portion, a horizontal loop connecting said upright loops and engageable with the sill of a Window, and a pair of arms respectively projecting 10 from said upright loops and interiorly engageabie with a Window frame.

In testimony whereof I sign this specification.

CARL ALLER. 

